Terms like eye-opener and nightcap, aperitif and digestif, all exist for a reason. Different alcoholic beverages are better suited for different times. But how exactly do the cocktail preferences of Americans change throughout the day? And which cocktails remain popular 24/7?

The numbers whizzes over at Nielsen recently released lists of the most popular cocktails served in bars and restaurants across the United States after digging through data collected over the final four months of last year. Nationwide, the top five cocktails were the margarita, martini, old fashioned, mimosa, and Moscow mule. Not a bad night out, really.

But some even more interesting information was included in Nielsen’s breakdowns. For instance, they also analyzed the best-selling cocktails by daypart — looking at drinking habits in the morning (6 a.m. to noon), afternoon (noon to 6 p.m.), evening (6 p.m. to midnight), and night (midnight to 6 a.m.) Through these lists, you really get a sense of the ebb and flow of ordering habits.

As you can see, like the setting of the sun, morning standards like the mimosa and bloody Mary wane throughout the day. Martinis lovers probably aren’t always awake before noon, but the drink becomes a standard after that. And like a vampire (or an Eric Clapton song), the Long Island iced tea only joins the fun after midnight. Meanwhile, the margarita and old fashioned are the only cocktails people can find a reason to drink all day long.

Nielsen also broke down the top cocktails in six major cities: Boston, Chicago, Los Angeles, Miami, New York, and Tampa. I’ve provided those lists below without commentary: I don’t mind making judgements on dayparts, but I’m not looking to make enemies in big cities.